Grease-gun.



F- W. SHIELDS.

GREASE GUN.

APPLICATLON FILED JAN.14. 1915.

1,259, 146. Patented Mar. 12, 191&

v State of Mississippi,

. to a device of this .panying drawings,

3 UNITED STATES PATENT OFFICE.

FERDINAND W. SHIELDS, 0F VICKSBURG, MISSISSIIPI, ASSIGNOR TO EDWARD C. TOLLINGER, 0F V ICKSBURG, MISSISSIPPI.

GREASE-GUN.

Specification of Letters Patent.

Patented Mar. 12, 1918.

To all 'tohom it may concern:

7 Be it known that I, FERDINAND W. SHIELDS,

a citizen of the Unlted States,

residing at in the county of Warren and have invented certain new and useful Improvements in Grease- Guns, of which the following is a specification.

This invention relates to the class of dispensing cans, and more particularly relates character intended to be used in the distribution of a lubricant such as grease, ordinarily difficult to handle in this manner.

As a principal object, it is contemplated by this invention to provide dispensing means for viscous oils or greases including manually operable forcing means for the ejection of the contained grease or oil, means directing the flow of the ejected substance in order to more easily reach points of application otherwise inaccessible, and means for measuring and indicating at a glance the amount of the substance still remaining in the container, such means to be connected to said forcing means.

An object of equal importance with the foregoing is to provide a container fitted with the previously mentioned ejecting, flowdirecting and measuring means which shall be fitted to I receive successive cartons in which the grease is furnished the consumer and to thoroughly empty each of these cartons before the sameneed be removed.

The above and additional objects which will become apparent as this explanatory description proceeds, are accomplished by such means as are illustrated in the accomdescribed in the following specification, and then more particularly pointed out in the claims which are appended hereto and form a part of tlns appl1cation.

With reference Vicksburg,

to the drawings, wherein there is illustrated the preferred embodiment of this invention as it is reduced to practice, and throughout the several news of which like characters of nate similar parts:

Figure 1 is a perspective view of the reference desiggrease dispensing container comprehended by this invention,

Fig. 2 is a longitudinal sectional view through said container showing a carton positioned therein, parts of the latter being broken away, and

Fig. 3 is a transverse sectional view, of the matter shown in Fig. 2.

Upon reference to the drawings, there will be seen illustrated a grease gun or dispensing container including a central cylindrical body portion 5 preferably formed of some light yet durable metal and provided at one extremity with an annular ofl'set flange 6 while furnished at the other extremity with the threaded portion 7.

The flange 6 has formed integrally therewith the diametrically opposed securing lugs 8, each of which has extending therethrough an aperture 9 to threadingly receive suitable securing means 10 whereby a head 11 is rigidly maintained with respect to the body cylinder 5. A reinforcin flange 12 integrally formed between the flange 6 and the cylinder 5 permits the formation of an annular groove 13 interiorly of the cylinder and extending into the said flange in the manner illustrated in Fig. 2.

The head portion 11 is also formed with a flange 14 similar to the flange 6 which it is designed to abut when permitting ears 15 to be secured by the means 10 to the first mentioned ears 8 and is further formed with the threaded boss 16 which serves as a bearing for the threaded operating shank 17 of the ejecting plunger 18 adapted to reciprocate within the cylinder 5, although said plunger is of comparatively less diameter for a purpose to be directly set forth. Handle means 19 adjustably connected with the threaded plunger rod 17 in the manner indicated by the numeral 20 permit of the manual operation of this plunger while at the opposite extremity of the body cylinder is removably carried a funnel shaped portion 21 upon the screw threads 7 to direct the flow of the discharging rease into the spout or ejection nozzle 22, t e outer tip of which is preferably formed in the arcuately bent manner indicated at 23 and the taper- 7 like. A handle 32 is within the cylinder.

having its covers stripped off is slid into the h tend simple llds with the funnel 21 in the manner denoted by the numeral 24. A shoulder 25 is formed upon the interior of the funnel portion 21 to a u t the edge of the cylinder 5 and to ex inwardly therebeyond while a shoul-. der 26 on the head 11 similarly abuts the opposite extremity of the cylinder 5 and' extends over the groove 13.

The grease containing carton which is adapted to be furnished as a filler for the grease gun of this invention is also of a simple cylindrical formation and may be constructed of alight metal if. it is desired to render these cartons permanent or of some other material suitable to the desires of the manufacturer. A positioning flange 27 is formed upon one end of this carton 28 while or covers -(not shown) may be provided for use therewith when the carton is being shipped or stored per 88, although of course such closures must be before the carton can be placed within a grease gun for proper operation.

The automatlcally indicating means showing the quantity of grease or oil remaining in one of these grease guns consists of a scale rod 29, one end of which is secured to the piston 18 while the other end is slidably inserted through an aperture 30 formed in the head 11 in such wise as to permit of this scale rod being always parallelly maintained with respect to the threaded plunger rod 17. This scale rod is of course graduated and preferably in units so commensurate with successive and equal cross sectional areas of the cylinder 5 as to readily denote the total area thereof in pounds and fractions of pounds. The plunger 18' which has been stated to be of less diameter than the cylinder 5 thus permits the walls of the carton to be interposed between this cylinder and itself and a sure contact between the plunger and. the carton is obtained by means of a flexible washer strip 31 of leather or the secured to the cylinder body for obvious use in the transportation of the same orfor holding it when in use.

When a new carton is to be positioned within the gun the head 11 is removed by a withdrawal of the fastening means 10, the piston and its scale being also removed and the funnel 21 is unscrewed from the opposite extremity of the cylinder 5 in order to push outwardly the empty carton, if such remains The new carton after cylinder after the manner of a cartridge until the flange 27 thereof engages snugly in the groove 13 when the funnel cap 21 and the head 11 may be. re-secured upon the cylinder, the latter of course when the plunger'18 has been withdrawn by the handle removed screwed on the other means to its outermost limit of movement.-

.The shoulders 25and 26 thus securely position the carton in the same place occupied by its predecessors so that the scale rod 29 is equally accurate for each. It will be obvious that a quantity of the viscid oil ,or grease will remain in the funnel 21 and nozzle 22 even after the" carton hasfben completely emptied and this oil will be ejected by the; first after a'new carton has been inserted in the cylinder.

. While in the foregoing however, therelias operation of the gun thus been illustrated in the drawings and describe in the specification, such combination and arrangement of elements as'con- I stitute the preferred embodiment of this-invention,.i t 1s desired'to emphasize the fact a that such minor changes in the mattersof proportion and degree may be made in later adaptations of this device as shall not alter' working through said head and extending into said body for forcibly ejectin a substance contained in said body, sai piston adapted to enter the chamber in the head when withdrawn from the body, a removable carton fitting within said cylinder formed with a flange to enter said recess in the body and be held in position by said head, and a removable ejectin funnel end of the cylinder.

In a grease gun, the: combination with a cylindrical body having a shouldered recess at one end, a removable head for said end of the cylinder having a chamber therein, the walls of which overhang said recess to bear upon the flange on the end of a carton adapted to be inserted in the cylinder and secure the carton in place, a removable ejecting funnel on the other extremity of the cylinder having ancarton, a piston fitted to work within said carton, and a piston rod threaded in said ead.

3, In a grease gun, the combination with a cylindrical body open at one end and havoverhanging shoulder adapted to sustain the opposite endof'the mg a shouldered recess within said. end

adapted to support the flange on the ehd of a carton insertible within the'body, a re-. movable head for said body having a chainher therein of slightly less diameter than the ton rod engaging said head for advancing 1 cylindrical bore of the body and serving or retracting the Piston.

when secured in place to hold the carton im- In testimony w ereof I afiix my signature movable, a piston movable longitudinally of in presence of two witnesses.

5 the carton to force the contents of the same FERDINAND W. SHIELDS.

from its opposite end and adapted when Witnesses: V withdrawn from the carton to enter the re- JAMES W. MAGILL,

cess in said head, and a screw threaded pis- GEO. B. SHAEFFER. 

